What's the difference between sell-side and buy-side?
Sell-side firms, such as investment banks, sell advice, securities, and market access. Buy-side firms, such as PE, hedge funds, and asset managers, invest capital and buy securities or companies.
Intuition
Capital markets naturally split into agents who manufacture information, access, and transaction infrastructure, and principals who decide where scarce capital should go. The sell-side monetizes market activity itself by reducing search, execution, and information frictions; the buy-side monetizes being right about asset value over time by bearing risk and exercising judgment.
Watch
Be ready for the follow-up on compensation: sell-side pay is tied to deal volume and fees, while buy-side pay is tied to investment performance via carry (\text{Carry} = \text{Carry%} \times \max(\text{Fund Profit} - \text{Hurdle}, 0)).
Deep Dive
Distinguish sell-side from buy-side by explaining what each side actually does, who pays whom, and how their economics differ.
| Dimension | Sell-Side | Buy-Side |
|---|---|---|
| Who | Investment banks, broker-dealers (Goldman Sachs IBD, Morgan Stanley, JP Morgan) | Asset managers, hedge funds, PE firms, pension funds (BlackRock, KKR, Citadel) |
| Core function | Advises and facilitates transactions — sells services (advisory, underwriting, research, execution) | Deploys capital — buys assets to generate returns for its own portfolio or LPs |
| Revenue model | Fee-based: advisory fees (typically 0.5%–2% of deal value), underwriting spreads, trading commissions, sales & trading P&L | Return-based: management fees (commonly 1–2% of AUM) + carried interest or performance fees (commonly 20% of profits above a hurdle) |
| Client | Corporations (M&A, capital raises), institutional investors (research, trade execution) | Limited partners (pensions, endowments, sovereign wealth funds, HNW individuals) |
| Output | Pitch books, fairness opinions, equity/credit research, deal execution, market-making liquidity | Investment theses, portfolio construction, due diligence on targets, asset management |
| Risk posture | Intermediary — earns fees regardless of whether the asset appreciates (except prop/principal positions) | Principal — directly bears gains and losses on invested capital |
Typical transaction flow connecting the two sides:
- Corporation hires sell-side bank to sell a division (sell-side earns an advisory fee)
- Sell-side prepares CIM, runs the process, solicits bids
- Buy-side PE fund receives the CIM, builds an LBO model, submits a bid
- Buy-side funds the acquisition with equity from its fund + debt arranged by the sell-side's leveraged finance group (sell-side earns underwriting/financing fees)
- Buy-side owns the asset, improves it, exits in 3–7 years — returns flow to LPs after management fee and carry
Key economic distinction: Sell-side compensation is tied to deal volume and fees (\text{Revenue} = \sum \text{Fee}_i across transactions closed). Buy-side compensation is tied to investment performance (\text{Carry} = \text{Carry%} \times \max(\text{Fund Profit} - \text{Hurdle}, 0)).
Shortcut: Sell-side = advisor/intermediary earning fees; buy-side = investor deploying capital earning returns.